# coding utf-8
__all__ = ['my_add','my_sub']


def my_add(a, b):
    """返回2个数相加结果"""
    return a + b


def my_sub(a, b):
    """返回2个数相减结果"""
    return a - b


ret = my_add(2, 2)
print('模块中测试代码：my_add(2, 2) = ', ret)
ret = my_sub(10, 2)
print('模块中测试代码：my_sub(10, 2) = ', ret)

print(__name__)

if __name__ == '__main__':
    print('导包时，我不会执行')
